CN103913372A - Special device of chain mechanical property test stretching jaw and application method - Google Patents
Special device of chain mechanical property test stretching jaw and application method Download PDFInfo
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- CN103913372A CN103913372A CN201410142317.9A CN201410142317A CN103913372A CN 103913372 A CN103913372 A CN 103913372A CN 201410142317 A CN201410142317 A CN 201410142317A CN 103913372 A CN103913372 A CN 103913372A
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Abstract
The invention relates to the technical field of stretching metal material mechanical property tests, and specifically discloses a special device of a chain mechanical property test stretching jaw and an application method. In the prior art, an integrated trapezoid clamping block testing tool is utilized to load a chain to a tensile testing machine for testing, the testing tool is deformed, ruptured and displaced along with the increase of testing force and reverse impact force generated by the fractured testing chain, and the veracity of testing data is seriously influenced. The special device provided by the invention is composed of a left jaw and a right jaw, wherein front positioning surfaces of the left jaw and the right jaw are oppositely arranged; an embossing platform and two positioning surfaces arranged on the inner side of the jaw can play the positioning role, the jaw is internally provided with three inner model cavities, and a dovetail boss arranged on the two sides of the outer side of the jaw is connected with a dovetail groove which corresponds to a base of the jaw of a testing machine. The special device and the application method provided by the invention have the advantages that the stress condition of a tensile test tool is improved, the elastic deformation, rupture and displacement generated by the testing tool and the testing machine in stretching are avoided and eliminated, the testing accuracy is guaranteed, the safety of an operator is guaranteed, and the cost is reduced.
Description
Technical field
The present invention relates to metal material mechanical property stretching technique field, specifically a kind of chain mechanical test stretching jaw special purpose device and using method.
Background technology
In the prior art, the stretching test method of chain, chain ring is that chain two ends half round pin is connected in trapezoidal fixture block mold through a chain link again, packs in cupping machine and carries out mechanical property tension test, after having tested, takes off test specimen.Along with the increase of test force, test tool produces elastic deformation, trapezoidal fixture block mold also produces displacement with respect to cupping machine, tension test data are the result of calculation that the elastic deformation that existing test tool is produced and the deflection of testing chain are added together, have a strong impact on the accuracy of test figure, show according to Measurement and analysis result many times for many years, the precision that the elastic deformation that test tool produces has influence on test figure reaches 1%～2%; Test specimen two ends are through the tension test power of excessive loads, produce permanent deformation, half round pin at chain two ends is clamped inflexibly and cannot be taken out, need to manually strike to pound the chain after stretcher strain and frock are separated, break the metal object fragment splashing into pieces and often injure testing crew.Test tool fracture, causes frock consuming cost high.
Summary of the invention
The object of this invention is to provide a kind of chain mechanical test stretching jaw special purpose device and using method, the defect existing to solve prior art, for mining chain and the test of chain ring on cupping machine of all size.
The technical solution adopted for the present invention to solve the technical problems is: chain mechanical test stretching jaw special purpose device comprises: the stretching crossbeam 9 of testing machine, jaw base 10, gathering sill 11, grip slide 12, clamping cylinder 13, is characterized in that: also comprise predetermination plane 1, the first internal mold die cavity 2, boss 3, the second internal mold die cavity 4, rear-locating face 5, dovetail boss 6, the 3rd internal mold die cavity 7;
Jaw is rectangular parallelepiped, formed by predetermination plane 1, the first internal mold die cavity 2, boss 3, the second internal mold die cavity 4, rear-locating face 5, dovetail boss 6, the 3rd internal mold die cavity 7, predetermination plane 1 is stretching jaw locating surface, is positioned at the center of tension test chain vertical direction; Jaw middle part the first internal mold die cavity 2 is Semicircular arched, and its semicircle inner arc matches with test chain cylindrical, and width B is the half of the outer width of chain link, and height H is greater than the half of test chain monocycle height; Height h and the chain ring diameter of boss 3 match, and the width b of boss 3 is less than the inner width distance between the flat ring of chain or vertical ring, and boss 3 and predetermination plane 1 are in one plane; Jaw upper end the second internal mold die cavity 4 is semicircle, and its semicircle inner arc matches with test chain cylindrical; Jaw the first internal mold die cavity 2 and the second internal mold die cavity 4 bottom surfaces are in same plane, and arc axis is parallel with predetermination plane 1; Rear-locating face 5 is provided with the dovetail boss 6 of elongated horizontal direction; Jaw the 3rd internal mold die cavity 7 is right angle circular arc, and its semicircle inner arc matches with test chain cylindrical, is positioned at the first internal mold die cavity 2 and above the second internal mold die cavity 4, near predetermination plane 1 position, its arc axis is vertical with predetermination plane 1;
Be made up of left jaw and right jaw, left and right jaw structure is identical, opposite direction, and the predetermination plane 1 of left and right jaw is staggered relatively, constitutes the stretching jaw special purpose device 8 of chain mechanical test;
When the clamping cylinder 13 of testing machine jaw is regained, predetermination plane (1) horizontal range of left and right jaw be made as be greater than test chain diameter d, be less than d (1+6%);
The dovetail boss 6 matrix dovetail groove corresponding with the jaw base 10 of testing machine on stretching jaw special purpose device 8 both sides is connected, and insert in the detent of jaw base 10 upper ends at grip slide 12 two ends, and grip slide 12 upper ends connect clamping cylinder 13; The stretching crossbeam 9 of testing machine is provided with gathering sill 11 above, and gathering sill 11 is 70 ° of inclined-planes; Regain or release by clamping cylinder 13, drive grip slide 12, stretching jaw special purpose device 8 and jaw base 10 to release along gathering sill 11 to oil cylinder or regain direction and move.
A kind of using method of chain mechanical test stretching jaw special purpose device: starting characteristics test machine, the clamping cylinder of testing machine jaw 13 is regained, be that clamping cylinder 13 moves upward, driving grip slide 12 that jaw base 10 is being prolonged to gathering sill 11 moves upward, left, right jaw base 10 separately, respectively by upper and lower two groups of left sides, the dovetail boss 6 of right jaw packs the upper and lower two groups of left sides of testing machine into, in the location dovetail groove of right jaw base 10, make a left side, right jaw is staggered relatively, now upper and lower two groups of left sides, the horizontal range of the predetermination plane (1) of right jaw is to be greater than the diameter of testing chain, be less than 6% of test chain actual diameter,
Semi-ring 14 is inserted in test chain 15, makes semi-ring 14 be close to the first model cavity 2 inner bottom surfaces, shoulder (semi-ring circular arc portion) is above left and right jaw two boss 3;
Service test machine, clamping cylinder 13 is released, be that clamping cylinder 13 moves downward, driving grip slide 12 and jaw base 10 to release direction along gathering sill 11 to oil cylinder moves, left until stretch, right jaw closes up, now, semi-ring 14 external arc are with left, the first internal mold die cavity 2 of right jaw coupling that combines, the chain (vertical ring) connecting with semi-ring 14 is with left, the 3rd internal mold die cavity 7 of the right jaw coupling that combines, with the circular arc portion of the vertical ring phase chain ring coupling that combines with the second internal mold die cavity 4 of left and right pincers, complete the installation of testpieces chain, start tension test,
After having tested, clamping cylinder 13 is regained, clamping cylinder 13 drives grip slide 12 testing machine jaw base 10 to be regained to direction along gathering sill 11 to oil cylinder and moves while withdrawal, the left and right jaw base 10 that clamping cylinder 13 is regained motoring ring test machine while arriving bottom separates, take out test chain, complete test.
Further, left and right jaw is selected alloy structure Steel material, hardness HRC55～59 after thermal treatment, and carry out blackening process.
The invention has the beneficial effects as follows, solve stress deformation and the breakage problem of existing stretching jaw device, play positioning action in jaw inner side increase by one place's raised platforms and two place's locating surfaces, stop mold distortion.When test, no matter test load strengthens arbitrarily tension test jaw remains not modification.While having ensured test, the testing requirements of chain mechanical property, makes test extensibility and disrumpent feelings extensibility in the past more accurate, has ensured accuracy and the precision of mechanical test data.Half chain link while utilizing the sampling of reviewer's gas cutting under gas cutting replaces half round pin chain link bar or chain ring in the past, because be not subject to the effect of tensile force and shearing force in process of the test, so do not produce distortion, for convenience detach and be repeatedly used, solve and manually struck the process of pounding half round pin in the past, ensure operating personnel's personal safety, greatly improved production efficiency.
Brief description of the drawings
Fig. 1 is the front view of the left jaw of the present invention;
Fig. 2 is the vertical view of the left jaw of the present invention;
Fig. 3 is the side view of the left jaw of the present invention;
Fig. 4 is that the A of Fig. 1 is to cut-open view;
Fig. 5 is that the C of Fig. 1 is to partial enlarged view;
Fig. 6 is that the present invention assembles schematic diagram.
In figure: 1, predetermination plane, 2, the first internal mold die cavity, 3, boss, 4, the second internal mold die cavity, 5, rear-locating face, 6, dovetail boss, 7, the 3rd internal mold die cavity, 8, stretching jaw special purpose device, 9, stretching crossbeam, 10, jaw base, 11, gathering sill, 12, grip slide, 13, clamping cylinder, 14, semi-ring, 15, chain.
B: the width of the first internal mold die cavity and the second internal mold die cavity, H: the height of the first internal mold die cavity, b: the width of boss, h: the height of boss.
Embodiment:
From Fig. 1～6, chain mechanical test stretching jaw special purpose device comprises: the stretching crossbeam 9 of testing machine, jaw base 10, gathering sill 11, grip slide 12, clamping cylinder 13, is characterized in that: also comprise predetermination plane 1, the first internal mold die cavity 2, boss 3, the second internal mold die cavity 4, rear-locating face 5, dovetail boss 6, the 3rd internal mold die cavity 7;
Jaw is rectangular parallelepiped, formed by predetermination plane 1, the first internal mold die cavity 2, boss 3, the second internal mold die cavity 4, rear-locating face 5, dovetail boss 6, the 3rd internal mold die cavity 7, predetermination plane 1 is stretching jaw locating surface, is positioned at the center of tension test chain vertical direction; Jaw middle part the first internal mold die cavity 2 is Semicircular arched, and its semicircle inner arc matches with test chain cylindrical, and width B is the half of the outer width of chain link, and height H is greater than the half of test chain monocycle height; Height h and the chain ring diameter of boss 3 match, and the width b of boss 3 is less than the inner width distance between the flat ring of chain or vertical ring, and boss 3 and predetermination plane 1 are in one plane; Jaw upper end the second internal mold die cavity 4 is semicircle, and its semicircle inner arc matches with test chain cylindrical; Jaw the first internal mold die cavity 2 and the second internal mold die cavity 4 bottom surfaces are in same plane, and arc axis is parallel with predetermination plane 1; Rear-locating face 5 is provided with the dovetail boss 6 of elongated horizontal direction; Jaw the 3rd internal mold die cavity 7 is right angle circular arc, and its semicircle inner arc matches with test chain cylindrical, is positioned at the first internal mold die cavity 2 and above the second internal mold die cavity 4, near predetermination plane 1 position, its arc axis is vertical with predetermination plane 1;
Be made up of left jaw and right jaw, left and right jaw structure is identical, opposite direction, and the predetermination plane 1 of left and right jaw is staggered relatively, constitutes the stretching jaw special purpose device 8 of chain mechanical test;
When the clamping cylinder 13 of testing machine jaw is regained, predetermination plane (1) horizontal range of left and right jaw be made as be greater than test chain diameter d, be less than d (1+6%);
The dovetail boss 6 matrix dovetail groove corresponding with the jaw base 10 of testing machine on stretching jaw special purpose device 8 both sides is connected, and insert in the detent of jaw base 10 upper ends at grip slide 12 two ends, and grip slide 12 upper ends connect clamping cylinder 13; The stretching crossbeam 9 of testing machine is provided with gathering sill 11 above, and gathering sill 11 is 70 ° of inclined-planes; Regain or release by clamping cylinder 13, drive grip slide 12, stretching jaw special purpose device 8 and jaw base 10 to release along gathering sill 11 to oil cylinder or regain direction and move.
A kind of using method of chain mechanical test stretching jaw special purpose device: starting characteristics test machine, the clamping cylinder of testing machine jaw 13 is regained, be that clamping cylinder 13 moves upward, driving grip slide 12 that jaw base 10 is being prolonged to gathering sill 11 moves upward, left, right jaw base 10 separately, respectively by upper and lower two groups of left sides, the dovetail boss 6 of right jaw packs the upper and lower two groups of left sides of testing machine into, in the location dovetail groove of right jaw base 10, make a left side, right jaw is staggered relatively, now upper and lower two groups of left sides, the horizontal range of the predetermination plane (1) of right jaw is to be greater than the diameter of testing chain, be less than 6% of test chain actual diameter,
Semi-ring 14 is inserted in test chain 15, makes semi-ring 14 be close to the first model cavity 2 inner bottom surfaces, shoulder (semi-ring circular arc portion) is above left and right jaw two boss 3;
Service test machine, clamping cylinder 13 is released, be that clamping cylinder 13 moves downward, driving grip slide 12 and jaw base 10 to release direction along gathering sill 11 to oil cylinder moves, left until stretch, right jaw closes up, now, semi-ring 14 external arc are with left, the first internal mold die cavity 2 of right jaw coupling that combines, the chain (vertical ring) connecting with semi-ring 14 is with left, the 3rd internal mold die cavity 7 of the right jaw coupling that combines, with the circular arc portion of the vertical ring phase chain ring coupling that combines with the second internal mold die cavity 4 of left and right pincers, complete the installation of testpieces chain, start tension test,
After having tested, clamping cylinder 13 is regained, clamping cylinder 13 drives grip slide 12 testing machine jaw base 10 to be regained to direction along gathering sill 11 to oil cylinder and moves while withdrawal, the left and right jaw base 10 that clamping cylinder 13 is regained motoring ring test machine while arriving bottom separates, take out test chain, complete test.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all embodiments.Everyly belong to apparent variation or the still row in protection scope of the present invention of variation that technical scheme of the present invention extends out.
Claims (3)
1. a chain mechanical test stretching jaw special purpose device, comprise: the stretching crossbeam (9) of testing machine, jaw base (10), gathering sill (11), grip slide (12), clamping cylinder (13), is characterized in that: also comprise predetermination plane (1), the first internal mold die cavity (2), boss (3), the second internal mold die cavity (4), rear-locating face (5), dovetail boss (6), the 3rd internal mold die cavity (7);
Jaw is rectangular parallelepiped, is stretching jaw locating surface by predetermination plane (1), is positioned at the center of tension test chain vertical direction; Jaw middle part the first internal mold die cavity (2) is Semicircular arched, and its semicircle inner arc matches with test chain cylindrical, and width B is the half of the outer width of chain link, and height H is greater than the half of test chain monocycle height; Height h and the chain ring diameter of boss (3) match, and the width b of boss (3) is less than the inner width distance between the flat ring of chain or vertical ring, and boss (3) and predetermination plane (1) are in one plane; Jaw upper end the second internal mold die cavity (4) is semicircle, and its semicircle inner arc matches with test chain cylindrical; Jaw the first internal mold die cavity (2) is with the second internal mold die cavity (4) bottom surface in same plane, and arc axis is parallel with predetermination plane (1); Rear-locating face (5) is provided with the dovetail boss (6) of elongated horizontal direction; Jaw the 3rd internal mold die cavity (7) is right angle circular arc, its semicircle inner arc matches with test chain cylindrical, be positioned at the first internal mold die cavity (2) and the second internal mold die cavity (4) above, near predetermination plane (1) position, its arc axis is vertical with predetermination plane (1);
Be made up of left jaw and right jaw, left and right jaw structure is identical, opposite direction, and the predetermination plane (1) of left and right jaw is staggered relatively, constitutes the stretching jaw special purpose device (8) of chain mechanical test;
When the clamping cylinder (13) of testing machine jaw is regained, predetermination plane (1) horizontal range of left and right jaw be made as be greater than test chain diameter d, be less than d (1+6%);
Dovetail boss (6) the matrix dovetail groove corresponding with the jaw base (10) of testing machine on stretching jaw special purpose device (8) both sides is connected, insert in the detent of jaw base (10) upper end at grip slide (12) two ends, and grip slide (12) upper end connects clamping cylinder (13); The stretching crossbeam (9) of testing machine is provided with gathering sill (11) above, and gathering sill (11) is 70 ° of inclined-planes; Regain or release by clamping cylinder (13), drive grip slide (12), stretching jaw special purpose device (8) and jaw base (10) to release or regain direction motion along gathering sill (11) to oil cylinder.
2. a kind of chain mechanical test stretching jaw special purpose device according to claim 1, the left and right jaw described in it is characterized in that is selected alloy structure Steel material, hardness HRC55～59 after thermal treatment, and carry out blackening process.
3. the using method of a chain mechanical test stretching jaw special purpose device, it is characterized in that, starting characteristics test machine, the clamping cylinder of testing machine jaw (13) is regained, be that clamping cylinder (13) moves upward, driving grip slide (12) that jaw base (10) is being prolonged to gathering sill (11) moves upward, left, right jaw base (10) separately, respectively by upper and lower two groups of left sides, the dovetail boss (6) of right jaw packs the upper and lower two groups of left sides of testing machine into, in the location dovetail groove of right jaw base (10), make a left side, right jaw is staggered relatively, now, upper and lower two groups of left sides, the horizontal range of the predetermination plane of right jaw is controlled at the diameter d～d (1+6%) of test chain,
Semi-ring (14) is inserted in test chain (15), make semi-ring (14) be close to the first model cavity (2) inner bottom surface, shoulder (semi-ring circular arc portion) is above left and right jaw two boss (3);
Service test machine, clamping cylinder (13) is released, be that clamping cylinder (13) moves downward, drive grip slide (12) and jaw base (10) to release direction motion along gathering sill (11) to oil cylinder, left until stretch, right jaw closes up, now, semi-ring (14) external arc is with left, the first internal mold die cavity (2) of right jaw coupling that combines, the chain (vertical ring) connecting with semi-ring (14) is with left, the 3rd internal mold die cavity (7) of the right jaw coupling that combines, with the circular arc portion of the vertical ring phase chain ring coupling that combines with the second internal mold die cavity (4) of left and right pincers, complete the installation of testpieces chain, start tension test,
After having tested, clamping cylinder (13) is regained, clamping cylinder (13) drives grip slide (12) testing machine jaw base (10) to be regained to direction motion along gathering sill (11) to oil cylinder while withdrawal, the left and right jaw base (10) that clamping cylinder (13) is regained motoring ring test machine while arriving bottom separates, take out test chain, complete test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410142317.9A CN103913372A (en) | 2014-04-01 | 2014-04-01 | Special device of chain mechanical property test stretching jaw and application method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410142317.9A CN103913372A (en) | 2014-04-01 | 2014-04-01 | Special device of chain mechanical property test stretching jaw and application method |
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| Publication Number | Publication Date |
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| CN103913372A true CN103913372A (en) | 2014-07-09 |
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| CN201410142317.9A Pending CN103913372A (en) | 2014-04-01 | 2014-04-01 | Special device of chain mechanical property test stretching jaw and application method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201150949Y (en) * | 2007-11-13 | 2008-11-19 | 浙江海亮股份有限公司 | Three-wire stretcher |
| CN103645097A (en) * | 2013-12-20 | 2014-03-19 | 济南时代试金试验机有限公司 | Tester specially used for ore chain |
| US20140102212A1 (en) * | 2011-05-17 | 2014-04-17 | Lindauer Dornier Gmbh | Apparatus and Method for Measuring the Stretch of a Chain Which Circulates Endlessly in the Apparatus |
| CN203881611U (en) * | 2014-04-01 | 2014-10-15 | 中煤张家口煤矿机械有限责任公司 | Special device for tensile jaw for mechanical performance test of chain |
-
2014
- 2014-04-01 CN CN201410142317.9A patent/CN103913372A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201150949Y (en) * | 2007-11-13 | 2008-11-19 | 浙江海亮股份有限公司 | Three-wire stretcher |
| US20140102212A1 (en) * | 2011-05-17 | 2014-04-17 | Lindauer Dornier Gmbh | Apparatus and Method for Measuring the Stretch of a Chain Which Circulates Endlessly in the Apparatus |
| CN103645097A (en) * | 2013-12-20 | 2014-03-19 | 济南时代试金试验机有限公司 | Tester specially used for ore chain |
| CN203881611U (en) * | 2014-04-01 | 2014-10-15 | 中煤张家口煤矿机械有限责任公司 | Special device for tensile jaw for mechanical performance test of chain |
Non-Patent Citations (1)
| Title |
|---|
| 祖冬梅等: ""煤矿企业链条机械性能试验的拉伸钳口专用装置的研制"", 《企业导报》 * |
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Application publication date: 20140709 |